Jess Sanford = 40/49/130 (Washington = 49/58/130)Melanie Glocke = 58/67/112 (Freemasonry = 58/67/139) (112, alt dialing code for 911)
The names of the witness reminds that this seems to be a federal conspiracy, perhaps a warning. The father of the deceased son is a congressman from Kansas.

As for the name of the slide, it connects to 'death'.

Death = 118 (Jewish Gematria)

New York City = 168 (Height of slide)

The name of the park in gematria is identical to 'freemasonry'.

With regards to this being Kansas, it reminds of how Lincoln was nearly assassinated at the Willard Hotel, just before the Civil War, just after Kansas became a state. That was February 23, 1861.